:root {
      --primary: #703bf7;
      --primary-hover: #5d2be0;
      --primary-light: #f5f0ff;
      --primary-glow: rgba(112, 59, 247, 0.18);
      --secondary: #9333ea;
      --accent: #ec4899;
      --accent-cyan: #06b6d4;
      --text-main: #19142e;
      --text-body: #4b5262;
      --text-muted: #6b7280;
      --bg-main: #faf9ff;
      --bg-white: #ffffff;
      --border-color: #e9e5f5;
      --border-focus: #c4b5fd;
      --shadow-sm: 0 4px 12px rgba(112, 59, 247, 0.05);
      --shadow-md: 0 10px 25px rgba(112, 59, 247, 0.08);
      --shadow-lg: 0 20px 40px rgba(112, 59, 247, 0.12);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --container-max: 1200px;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
      background-image: 
        radial-gradient(at 10% 10%, rgba(147, 51, 234, 0.04) 0px, transparent 50%),
        radial-gradient(at 90% 90%, rgba(236, 72, 153, 0.04) 0px, transparent 50%);
      background-attachment: fixed;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.25s ease;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* 顶部导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-color);
      transition: all 0.3s ease;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 74px;
    }

    .brand-wrap {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .ai-page-logo {
      height: 42px;
      width: auto;
      display: block;
    }

    .brand-text {
      font-size: 1.25rem;
      font-weight: 800;
      background: linear-gradient(135deg, #703bf7, #a855f7);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }

    .nav-links li a {
      font-size: 0.92rem;
      font-weight: 500;
      color: var(--text-body);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      display: block;
      white-space: nowrap;
    }

    .nav-links li a:hover,
    .nav-links li a.active {
      color: var(--primary);
      background-color: var(--primary-light);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 20px;
      font-size: 0.92rem;
      font-weight: 600;
      border-radius: var(--radius-full);
      cursor: pointer;
      border: 1px solid transparent;
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      text-align: center;
      line-height: 1;
    }

    .btn-primary {
      background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(112, 59, 247, 0.35);
    }

    .btn-primary:hover {
      background: linear-gradient(135deg, var(--primary-hover) 0%, #7e22ce 100%);
      box-shadow: 0 6px 20px rgba(112, 59, 247, 0.45);
      transform: translateY(-2px);
      color: #ffffff;
    }

    .btn-outline {
      background: #ffffff;
      color: var(--primary);
      border-color: #ddd6fe;
    }

    .btn-outline:hover {
      background: var(--primary-light);
      border-color: var(--primary);
      transform: translateY(-2px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
      color: var(--text-main);
    }

    /* 区域排版基准 */
    .section-block {
      padding: 80px 0;
      position: relative;
    }

    .section-head {
      text-align: center;
      max-width: 720px;
      margin: 0 auto 54px auto;
    }

    .section-badge {
      display: inline-block;
      padding: 6px 16px;
      background: #ede9fe;
      color: var(--primary);
      font-size: 0.85rem;
      font-weight: 700;
      border-radius: var(--radius-full);
      margin-bottom: 14px;
      letter-spacing: 0.5px;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 14px;
      letter-spacing: -0.5px;
      line-height: 1.3;
    }

    .section-sub {
      font-size: 1.05rem;
      color: var(--text-body);
      line-height: 1.6;
    }

    /* 首屏 Hero - 禁止图片，纯科技感与紫色绚烂光彩 */
    .hero-section {
      padding: 90px 0 80px 0;
      background: linear-gradient(180deg, #f7f3ff 0%, #faf9ff 100%);
      position: relative;
      overflow: hidden;
    }

    .hero-glow-1 {
      position: absolute;
      top: -120px;
      left: 50%;
      transform: translateX(-50%);
      width: 700px;
      height: 380px;
      background: radial-gradient(circle, rgba(168, 85, 247, 0.28) 0%, rgba(112, 59, 247, 0.12) 50%, rgba(255, 255, 255, 0) 70%);
      filter: blur(50px);
      pointer-events: none;
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
      text-align: center;
      max-width: 880px;
      margin: 0 auto;
    }

    .hero-pill {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 6px 18px;
      background: rgba(255, 255, 255, 0.9);
      border: 1px solid #d8b4fe;
      border-radius: var(--radius-full);
      color: var(--primary);
      font-size: 0.88rem;
      font-weight: 600;
      margin-bottom: 24px;
      box-shadow: 0 4px 15px rgba(112, 59, 247, 0.1);
    }

    .hero-pill-dot {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: #10b981;
      display: inline-block;
      animation: pulseDot 2s infinite;
    }

    @keyframes pulseDot {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(0.85); }
    }

    .hero-title {
      font-size: 3.1rem;
      font-weight: 900;
      line-height: 1.22;
      color: #150d30;
      margin-bottom: 22px;
      letter-spacing: -1px;
    }

    .hero-title-highlight {
      background: linear-gradient(135deg, #703bf7 0%, #ec4899 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.18rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 36px;
      max-width: 740px;
      margin-left: auto;
      margin-right: auto;
    }

    .hero-cta-group {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }

    .hero-cta-btn-main {
      font-size: 1.05rem;
      padding: 14px 34px;
      box-shadow: 0 10px 25px rgba(112, 59, 247, 0.4);
    }

    .hero-cta-btn-sub {
      font-size: 1.05rem;
      padding: 14px 28px;
    }

    .hero-badges-list {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 18px;
      flex-wrap: wrap;
      margin-bottom: 50px;
    }

    .hero-badge-item {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-size: 0.9rem;
      font-weight: 500;
      color: #374151;
    }

    .hero-badge-item svg {
      width: 18px;
      height: 18px;
      color: var(--primary);
    }

    /* 首屏数据指标卡片群（CSS 打造科技仪表盘，无任何图片） */
    .hero-metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 10px;
    }

    .metric-card {
      background: #ffffff;
      border: 1px solid #ebdfff;
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      position: relative;
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }

    .metric-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #d8b4fe;
    }

    .metric-num {
      font-size: 2.3rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1;
      margin-bottom: 8px;
      font-family: Arial, sans-serif;
    }

    .metric-num span {
      font-size: 1.3rem;
      font-weight: 600;
    }

    .metric-label {
      font-size: 0.88rem;
      color: var(--text-muted);
      font-weight: 500;
    }

    /* 模型矩阵胶囊走廊 */
    .models-marquee-wrap {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      margin-top: 40px;
    }

    .models-marquee-title {
      text-align: center;
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--primary);
      letter-spacing: 0.5px;
      text-transform: uppercase;
      margin-bottom: 20px;
    }

    .model-capsules {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      justify-content: center;
    }

    .model-chip {
      display: inline-flex;
      align-items: center;
      padding: 7px 16px;
      background: #fbf9ff;
      border: 1px solid #e9d5ff;
      border-radius: var(--radius-full);
      font-size: 0.86rem;
      font-weight: 600;
      color: #3b2d60;
      transition: all 0.25s ease;
    }

    .model-chip:hover {
      background: #703bf7;
      color: #ffffff;
      border-color: #703bf7;
      transform: translateY(-2px);
    }

    /* 核心服务工坊网格 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .service-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
      position: relative;
      overflow: hidden;
    }

    .service-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: opacity 0.3s ease;
    }

    .service-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #d8b4fe;
    }

    .service-card:hover::before {
      opacity: 1;
    }

    .service-icon-box {
      width: 52px;
      height: 52px;
      border-radius: 12px;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .service-icon-box svg {
      width: 28px;
      height: 28px;
    }

    .service-card-title {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
      color: var(--text-main);
    }

    .service-card-desc {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .service-tag {
      align-self: flex-start;
      display: inline-block;
      font-size: 0.78rem;
      font-weight: 600;
      padding: 3px 10px;
      border-radius: var(--radius-sm);
      background: #faf5ff;
      color: var(--primary);
      border: 1px solid #ebd5ff;
    }

    /* 场景解决方案大卡片 */
    .scenario-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .scenario-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 22px 18px;
      transition: all 0.3s ease;
    }

    .scenario-item:hover {
      background: #fbf9ff;
      border-color: #c084fc;
      transform: translateY(-3px);
    }

    .scenario-badge {
      font-size: 0.75rem;
      font-weight: 700;
      color: #9333ea;
      margin-bottom: 8px;
      display: block;
    }

    .scenario-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 8px;
    }

    .scenario-text {
      font-size: 0.85rem;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 对比评测卡片与表格 */
    .eval-highlight-box {
      background: linear-gradient(135deg, #4c1d95 0%, #6d28d9 50%, #7c3aed 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 40px;
      margin-bottom: 36px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0 15px 35px rgba(109, 40, 217, 0.25);
    }

    .eval-left {
      max-width: 600px;
    }

    .eval-rec-title {
      font-size: 1.8rem;
      font-weight: 800;
      margin-bottom: 10px;
    }

    .eval-stars {
      color: #fbbf24;
      font-size: 1.4rem;
      margin-bottom: 12px;
      letter-spacing: 4px;
    }

    .eval-sub {
      font-size: 0.95rem;
      opacity: 0.9;
      line-height: 1.6;
    }

    .eval-score-badge {
      text-align: center;
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.3);
      padding: 24px 36px;
      border-radius: var(--radius-md);
      backdrop-filter: blur(10px);
    }

    .eval-score-num {
      font-size: 3.5rem;
      font-weight: 900;
      line-height: 1;
      font-family: Arial, sans-serif;
    }

    .eval-score-max {
      font-size: 0.9rem;
      opacity: 0.8;
      margin-top: 6px;
    }

    .table-container {
      width: 100%;
      overflow-x: auto;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-sm);
    }

    .eval-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .eval-table th {
      background: #f8f6fc;
      color: var(--text-main);
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-color);
    }

    .eval-table td {
      padding: 16px 20px;
      border-bottom: 1px solid #f0ecfa;
      color: var(--text-body);
    }

    .eval-table tr:last-child td {
      border-bottom: none;
    }

    .eval-table tr:hover td {
      background-color: #faf8ff;
    }

    .eval-strong {
      font-weight: 700;
      color: var(--primary);
    }

    /* 案例中心 */
    .case-gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .case-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      display: flex;
      flex-direction: column;
    }

    .case-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }

    .case-img-box {
      width: 100%;
      height: 220px;
      background: #f1edfa;
      overflow: hidden;
      position: relative;
    }

    .case-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: transform 0.4s ease;
    }

    .case-card:hover .case-img-box img {
      transform: scale(1.05);
    }

    .case-content {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .case-category {
      font-size: 0.78rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .case-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .case-desc {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 14px;
    }

    .case-meta {
      margin-top: auto;
      font-size: 0.82rem;
      color: var(--text-muted);
      border-top: 1px dashed var(--border-color);
      padding-top: 12px;
      display: flex;
      justify-content: space-between;
    }

    /* 标准化流程 & 服务网络 */
    .workflow-steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }

    .workflow-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 28px 20px;
      text-align: center;
      position: relative;
      box-shadow: var(--shadow-sm);
    }

    .workflow-num {
      width: 44px;
      height: 44px;
      line-height: 44px;
      border-radius: 50%;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      color: #ffffff;
      font-weight: 800;
      font-size: 1.15rem;
      margin: 0 auto 16px auto;
    }

    .workflow-name {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }

    .workflow-desc {
      font-size: 0.86rem;
      color: var(--text-body);
      line-height: 1.5;
    }

    /* 用户评论 */
    .reviews-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .review-card {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .review-stars {
      color: #fbbf24;
      font-size: 0.95rem;
      margin-bottom: 12px;
    }

    .review-text {
      font-size: 0.92rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
      font-style: italic;
    }

    .reviewer-meta {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #f1edfa;
      padding-top: 16px;
    }

    .reviewer-avatar-placeholder {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: linear-gradient(135deg, #a855f7, #6366f1);
      color: #ffffff;
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.9rem;
    }

    .reviewer-name {
      font-weight: 700;
      color: var(--text-main);
      font-size: 0.95rem;
    }

    .reviewer-role {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 加盟代理模块 */
    .partner-banner {
      background: linear-gradient(135deg, #2e1065 0%, #581c87 50%, #7e22ce 100%);
      color: #ffffff;
      border-radius: var(--radius-lg);
      padding: 50px 40px;
      display: grid;
      grid-template-columns: 1.4fr 1fr;
      gap: 40px;
      align-items: center;
      box-shadow: var(--shadow-lg);
    }

    .partner-title {
      font-size: 2.1rem;
      font-weight: 800;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .partner-text {
      font-size: 1rem;
      opacity: 0.9;
      line-height: 1.7;
      margin-bottom: 24px;
    }

    .partner-points {
      list-style: none;
      margin-bottom: 28px;
    }

    .partner-points li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.95rem;
      margin-bottom: 10px;
    }

    .partner-right-box {
      background: rgba(255, 255, 255, 0.1);
      backdrop-filter: blur(12px);
      border: 1px solid rgba(255, 255, 255, 0.25);
      border-radius: var(--radius-md);
      padding: 30px;
      text-align: center;
    }

    .partner-stat-num {
      font-size: 2.8rem;
      font-weight: 800;
      color: #facc15;
      font-family: Arial, sans-serif;
      line-height: 1;
      margin-bottom: 8px;
    }

    /* 常见问题 FAQ */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
    }

    .faq-item.active {
      border-color: #c4b5fd;
      box-shadow: var(--shadow-sm);
    }

    .faq-question {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: space-between;
      user-select: none;
    }

    .faq-icon {
      width: 22px;
      height: 22px;
      transition: transform 0.3s ease;
      color: var(--primary);
    }

    .faq-item.active .faq-icon {
      transform: rotate(180deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s ease;
      background: #faf8ff;
    }

    .faq-answer-inner {
      padding: 0 24px 20px 24px;
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
    }

    /* 需求匹配与联系我们表单 */
    .contact-wrapper {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 36px;
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 44px;
      box-shadow: var(--shadow-md);
    }

    .contact-info-side {
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .contact-lead-title {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .contact-lead-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 28px;
    }

    .contact-channels {
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 30px;
    }

    .channel-item {
      display: flex;
      align-items: center;
      gap: 14px;
      font-size: 0.92rem;
      color: var(--text-body);
    }

    .channel-icon {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      background: var(--primary-light);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      flex-shrink: 0;
    }

    .qrcode-box {
      display: flex;
      align-items: center;
      gap: 18px;
      padding: 16px;
      background: #fbf9ff;
      border: 1px dashed #d8b4fe;
      border-radius: var(--radius-md);
    }

    .qrcode-box img {
      width: 90px;
      height: 90px;
      border-radius: 8px;
      object-fit: cover;
    }

    .qrcode-text {
      font-size: 0.88rem;
      color: var(--text-body);
    }

    .qrcode-title {
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 4px;
    }

    .form-box {
      background: #faf9ff;
      padding: 32px;
      border-radius: var(--radius-md);
      border: 1px solid #ede9fe;
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-label {
      display: block;
      font-size: 0.88rem;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 6px;
    }

    .form-input,
    .form-select,
    .form-textarea {
      width: 100%;
      padding: 12px 14px;
      border: 1px solid #dcd7ee;
      border-radius: var(--radius-sm);
      font-size: 0.92rem;
      color: var(--text-main);
      background: #ffffff;
      outline: none;
      transition: border-color 0.2s ease, box-shadow 0.2s ease;
      font-family: inherit;
    }

    .form-input:focus,
    .form-select:focus,
    .form-textarea:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(112, 59, 247, 0.15);
    }

    .form-textarea {
      resize: vertical;
      min-height: 90px;
    }

    .form-submit-btn {
      width: 100%;
      padding: 14px;
      font-size: 1rem;
      font-weight: 700;
    }

    /* 行业资讯 & AI百科 */
    .articles-hub-box {
      background: #ffffff;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 30px;
      box-shadow: var(--shadow-sm);
      margin-top: 30px;
    }

    .articles-dynamic-call {
      font-size: 0.95rem;
      color: var(--text-body);
      margin-bottom: 20px;
      padding-bottom: 16px;
      border-bottom: 1px dashed var(--border-color);
    }

    .article-links-list {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      list-style: none;
    }

    .article-links-list li a {
      display: inline-block;
      padding: 8px 16px;
      background: #fbf9ff;
      border: 1px solid #e9d5ff;
      border-radius: var(--radius-sm);
      font-size: 0.88rem;
      color: #4b3687;
      transition: all 0.2s ease;
    }

    .article-links-list li a:hover {
      background: var(--primary);
      color: #ffffff;
      border-color: var(--primary);
    }

    /* 友情链接与页脚 */
    .site-footer {
      background: #ffffff;
      border-top: 1px solid var(--border-color);
      padding: 60px 0 30px 0;
      position: relative;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 36px;
      margin-bottom: 40px;
    }

    .footer-brand-title {
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 12px;
    }

    .footer-brand-desc {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 18px;
    }

    .footer-col-title {
      font-size: 0.98rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 16px;
    }

    .footer-link-list {
      list-style: none;
    }

    .footer-link-list li {
      margin-bottom: 10px;
    }

    .footer-link-list li a {
      font-size: 0.88rem;
      color: var(--text-body);
    }

    .footer-link-list li a:hover {
      color: var(--primary);
      padding-left: 4px;
    }

    .friend-links-box {
      border-top: 1px solid #f1edfa;
      padding: 24px 0;
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
      font-size: 0.86rem;
      color: var(--text-body);
    }

    .friend-links-title {
      font-weight: 700;
      color: var(--text-main);
      margin-right: 8px;
    }

    .friend-links-box a {
      color: var(--text-body);
      padding: 3px 8px;
      border-radius: 4px;
      background: #faf8ff;
      border: 1px solid #ede9fe;
    }

    .friend-links-box a:hover {
      color: var(--primary);
      border-color: var(--primary);
    }

    .footer-bottom {
      border-top: 1px solid #f1edfa;
      padding-top: 24px;
      text-align: center;
      font-size: 0.85rem;
      color: var(--text-muted);
    }

    /* 悬浮客服挂件 */
    .floating-widget {
      position: fixed;
      right: 24px;
      bottom: 28px;
      z-index: 999;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .floating-btn {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #ffffff;
      color: var(--primary);
      border: 1px solid #ddd6fe;
      box-shadow: 0 4px 16px rgba(112, 59, 247, 0.2);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.25s ease;
    }

    .floating-btn:hover {
      background: var(--primary);
      color: #ffffff;
      transform: translateY(-3px);
    }

    .floating-btn svg {
      width: 22px;
      height: 22px;
    }

    /* 响应式媒体查询 */
    @media (max-width: 1024px) {
      .hero-title {
        font-size: 2.5rem;
      }
      .services-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .scenario-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .hero-metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .case-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .partner-banner {
        grid-template-columns: 1fr;
      }
      .contact-wrapper {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #ffffff;
        flex-direction: column;
        align-items: flex-start;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border-color);
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
      }
      .nav-links.active {
        display: flex;
      }
      .nav-links li {
        width: 100%;
      }
      .nav-links li a {
        padding: 12px 0;
        width: 100%;
        border-bottom: 1px solid #f3eeff;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-title {
        font-size: 2.1rem;
      }
      .hero-metrics-grid {
        grid-template-columns: 1fr 1fr;
      }
      .services-grid {
        grid-template-columns: 1fr;
      }
      .scenario-grid {
        grid-template-columns: 1fr;
      }
      .workflow-steps-grid {
        grid-template-columns: 1fr;
      }
      .reviews-grid {
        grid-template-columns: 1fr;
      }
      .case-gallery-grid {
        grid-template-columns: 1fr;
      }
      .eval-highlight-box {
        flex-direction: column;
        text-align: center;
        gap: 24px;
      }
      .footer-top {
        grid-template-columns: 1fr;
      }
    }